<template>
  <!-- 新增部门的弹层 -->
  <el-dialog title="新增部门" :visible="showDialog" :before-close="handleClose">
    <!-- 表单组件  el-form   label-width设置label的宽度   -->
    <!-- 匿名插槽 -->
    <el-form ref="form" :model="formData" label-width="120px" :rules="rules">
      <el-form-item label="部门名称" prop="name">
        <el-input
          v-model="formData.name"
          style="width:80%"
          placeholder="1-50个字符"
        />
      </el-form-item>
      <el-form-item label="部门编码" prop="code">
        <el-input
          v-model="formData.code"
          style="width:80%"
          placeholder="1-50个字符"
        />
      </el-form-item>
      <el-form-item label="部门负责人" prop="manager">
        <el-select
          v-model="formData.manager"
          style="width:80%"
          placeholder="请选择"
          @focus="getEmployeeSimple"
          @blur="checkManagerFn"
        >
          <el-option
            v-for="item in employee"
            :key="item.id"
            :label="item.username"
            :value="item.username"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="部门介绍" prop="introduce">
        <el-input
          v-model="formData.introduce"
          style="width:80%"
          placeholder="1-300个字符"
          type="textarea"
          :rows="3"
        />
      </el-form-item>
    </el-form>
    <!-- el-dialog有专门放置底部操作栏的 插槽  具名插槽 -->
    <el-row slot="footer" type="flex" justify="center">
      <!-- 列被分为24 -->
      <el-col :span="6">
        <el-button type="primary" size="small" @click.native="handleSubmit"
          >确定</el-button
        >
        <el-button size="small" @click.native="handleClose">取消</el-button>
      </el-col>
    </el-row>
  </el-dialog>
</template>

<script lang="ts">
import eventBus from '@/utils/event-bus'
import { Component, Vue, Prop, Watch, Emit } from 'vue-property-decorator'
import {
  addDepartmentAPI,
  editDepartmentAPI,
  getDepartmentInfoAPI
} from '@/api/departments'
import { getEmployeeSimpleAPI } from '@/api/employees'
import { Form as ElForm } from 'element-ui'
import { IDeparts } from '@/model/interface/departments'

@Component({ name: 'AddDept' })
export default class extends Vue {
  @Prop({
    type: Array
  })
  allDepartments!: Array<any>

  // 窗口关闭时清空数据
  @Watch('showDialog')
  onShowDialogChange(val: boolean) {
    if (!val) setTimeout(() => (this.$refs.form as ElForm).resetFields(), 500)
  }

  showDialog = false // 显示状态
  formData: IDeparts = {
    code: '',
    introduce: '',
    manager: '',
    name: '',
    id: ''
  } // 表单数据

  rules = {
    code: [
      { required: true, trigger: 'blur', message: '编码不能为空' },
      { trigger: 'blur', validator: this.checkCodeFn },
      { message: '不得超过50个字符', max: 50, trigger: 'blur' }
    ],
    introduce: [
      { required: true, trigger: 'blur', message: '介绍不能为空' },
      { message: '不得超过300个字符', max: 300, trigger: 'blur' }
    ],
    manager: [{ required: true, trigger: 'blur', message: '不能为空' }],
    name: [
      { required: true, trigger: 'blur', message: '名称不能为空' },
      { trigger: 'blur', validator: this.checkNameFn },
      { message: '不得超过50个字符', max: 50, trigger: 'blur' }
    ]
  } // 表单校验规则

  employee = [] // 员工列表
  edit = false // 新增还是修改？

  created() {
    eventBus.$on('showDialogFn', (id: string, edit = false) => {
      this.showDialog = true // 打开
      this.edit = edit // 是否编辑
      if (!edit) this.formData.pid = id // 新增存pid
      if (edit) this.getDepartmentInfo(id) // 修改存id
    })
    this.getEmployeeSimple() // 下拉数据
  }

  // 校验重名部门
  checkNameFn(rule: unknown, val: string, callback: Function) {
    const hasName = this.allDepartments
      .filter(item => item.pid === this.formData.pid) // 筛选出自己的父级部门
      .some(item => item.name === val && item.id !== this.formData.id) // 从父级部门中筛选出重名 且 不为自身
    if (hasName) return callback(new Error('该部门重名'))
    else return callback()
  }

  // 校验重复 code
  checkCodeFn(rule: unknown, val: string, callback: Function) {
    // 从所有部门中筛选出重名 且 不为自身
    const hasCode = this.allDepartments.some(
      item => item.code === val && this.formData.id !== item.id
    )
    if (hasCode) return callback(new Error('该 code 已存在'))
    else return callback()
  }

  // 下拉校验
  checkManagerFn() {
    setTimeout(() => (this.$refs.form as ElForm).validateField('manager'), 500)
  }

  // 取消提交
  handleClose() {
    this.$message.info('取消提交')
    this.showDialog = false // 关闭窗口
  }

  // 提交
  @Emit('reload')
  handleSubmit() {
    (this.$refs.form as ElForm).validate(async valid => {
      if (!valid) return this.$message.warning('请检查填写内容！') // 校验不通过
      // console.log(this.formData)
      this.edit
        ? await editDepartmentAPI(this.formData.id, this.formData) // 修改
        : await addDepartmentAPI(this.formData) // 新增
      // console.log(res)
      // 反馈
      this.$message.success('操作成功！')
      this.showDialog = false // 重置表单
    })
  }

  // 获取员工列表
  async getEmployeeSimple() {
    this.employee = await getEmployeeSimpleAPI()
  }

  // 获取详情并填充
  async getDepartmentInfo(id: string) {
    const res = await getDepartmentInfoAPI(id)
    // console.log(res)
    this.formData = {
      code: res.code,
      introduce: res.introduce,
      manager: res.manager,
      name: res.name,
      id
    }
  }
}
</script>
